renamed svn repo in docs

manual/docs/en/getting-started/installation.txt

-The installation of doctrine is very easy. Just get the latest revision of Doctrine from http://doctrine.pengus.net/svn/trunk. 
+The installation of doctrine is very easy. Just get the latest revision of
+Doctrine from http://svn.phpdoctrine.org/trunk. 
 
 You need a SVN (Subversion) client for downloading Doctrine.
 
 In order to check out Doctrine in the current directory using the **svn** command line tool use the following code: 
 
 <code type="bash">
-svn co http://doctrine.pengus.net/svn/trunk . 
+svn co http://svn.phpdoctrine.org/trunk . 
 </code>
 
-If you do not have a SVN client, chose one from the list below. Find the **Checkout** option and enter http://doctrine.pengus.net/svn/trunk in the **path** or **repository url** parameter. There is no need for a username or password to check out Doctrine. 
+If you do not have a SVN client, chose one from the list below. Find the
+**Checkout** option and enter http://svn.phpdoctrine.org/trunk in the **path** or **repository url** parameter. There is no need for a username or password to check out Doctrine. 
 
 * [http://tortoisesvn.tigris.org/ TortoiseSVN] a Windows application that  integrates into Windows Explorer
 * [http://www.apple.com/downloads/macosx/development_tools/svnx.html svnx] a  Mac OS X GUI svn application